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Combined-type permanent magnet pole drive motor rotor production method

A technology for driving motors and production methods, which is applied in the manufacture of motor-generators, magnetic circuit rotating parts, and stator/rotor bodies, etc., can solve problems such as drop, drive motor efficiency reduction, irreversible demagnetization, etc., and achieve high output power, The effect of high magnetic field strength and high power density

Active Publication Date: 2016-07-20
SHANDONG UNIV OF TECH
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Problems solved by technology

[0002] At present, most of the production methods of permanent magnet drive motor rotors used in electric vehicles adopt the permanent magnet external embedded structure, such as the existing technology, patent name: brushless DC motor rotor, patent number: ZL200920116549.1, discloses the following technical solutions, Including rotor core, rotating shaft and permanent magnet, the rotor core is composed of punched sheets and connected into one, the rotating shaft is fixedly connected with the rotor core, the outer surface of the rotor core is evenly distributed with an even number of T-shaped wedges, adjacent T Slots are formed between the shaped wedges, and the permanent magnets are correspondingly embedded in the slots. The permanent magnets of the rotor with this structure directly face the air gap. Under the action of the armature reaction of the impact current, irreversible demagnetization may occur. Once the permanent magnets are formed irreversible Demagnetization, the efficiency of the drive motor decreases, the power and torque drop rapidly, and its performance needs to be further improved

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  • Combined-type permanent magnet pole drive motor rotor production method

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with accompanying drawing:

[0008] The combined permanent magnet pole-driven motor rotor production method is characterized in that: punching and cutting circular rotor punches, the rotor punches are evenly distributed with an even number of rectangular radial grooves with the same shape and size running through the thickness of the rotor punches, the rectangular diameter The outer edge of the groove is a convex arc, and the arch height of the convex arc is 1mm. There is a 1.5mm disconnected part between the top of the convex arc and the outer circle of the rotor punch. In the middle of the outer end, there is an arc-shaped groove that runs through the thickness of the rotor punch and faces the outer circle of the rotor punch. The arc-shaped groove is not connected to the rectangular radial groove. There is a disconnected part of 1.5mm between the outer circles. The inner edge of each rectangular radi...

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Abstract

The invention provides a combined-type permanent magnet pole drive motor rotor production method, and belongs to the technical field of electric car motor and electric appliances. Permanent magnet steels are respectively embedded into a rectangular radial groove and an arc-shaped groove of a rotor core. The structure is a rotor magnetic bypass structure, can effectively prevent the permanent magnet steels from causing irreversible demagnetization under the armature reaction of an impact current, and guarantees that the permanent magnet steels are not demagnetized. Meanwhile, the magnetic field of each magnetic pole of the drive motor rotor is provided by three permanent magnet steels, and is large in intensity. The method is high in output power, is high in efficiency, is high in power density, and is high in reliability.

Description

technical field [0001] The invention provides a method for producing a combined permanent magnet pole-driven motor rotor, which belongs to the technical field of electric vehicle motors and appliances. Background technique [0002] At present, most of the production methods of permanent magnet drive motor rotors used in electric vehicles adopt the permanent magnet external embedded structure, such as the existing technology, patent name: brushless DC motor rotor, patent number: ZL200920116549.1, discloses the following technical solutions, Including rotor core, rotating shaft and permanent magnet, the rotor core is composed of punched sheets and connected into one, the rotating shaft is fixedly connected with the rotor core, the outer surface of the rotor core is evenly distributed with an even number of T-shaped wedges, adjacent T Slots are formed between the shaped wedges, and the permanent magnets are correspondingly embedded in the slots. The permanent magnets of the rot...

Claims

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Application Information

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IPC IPC(8): H02K15/03H02K1/27
CPCH02K1/272H02K15/03
Inventor 张学义杜钦君史立伟刘从臻刘瑞军
Owner SHANDONG UNIV OF TECH
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